网上转的都太不靠谱了 ＝ ＝ 在一个MP3播放器里面挖了出来，用时就用上了～

1     public staticBitmap getAlbumArtWork(String filePath) {2         try{3             MediaMetadataRetriever metaRetriver = newMediaMetadataRetriever();4 metaRetriver.setDataSource(filePath);5             byte[] album =metaRetriver.getEmbeddedPicture();6             if (album != null) {7                 BitmapFactory.Options opts = newBitmapFactory.Options();8                 opts.inJustDecodeBounds = true;9                 BitmapFactory.decodeByteArray(album, 0, album.length, opts);10                 opts.inSampleSize =calculateInSampleSize(opts);11                 opts.inJustDecodeBounds = false;12                 return BitmapFactory.decodeByteArray(album, 0, album.length, opts);13 }14             return null;15         } catch(Exception e) {16             return null;17 }18 }19     public static intcalculateInSampleSize(BitmapFactory.Options options) {20         //Raw height and width of image
21         final int height =options.outHeight;22         final int width =options.outWidth;23         int inSampleSize = 1;24         //Our height and width will always be the same since all glass has the same resolution, for now...
25         if (height > 360 || width > 640) {26             final int halfHeight = height / 2;27             final int halfWidth = width / 2;28             //Calculate the largest inSampleSize value that is a power of 2 and keeps both29             //height and width larger than the requested height and width.
30             while ((halfHeight / inSampleSize) > 360 && (halfWidth / inSampleSize) > 640) {31                 inSampleSize *= 2;32 }33 }34
35         returninSampleSize;36     }